Hydroflask vs Coldest Water Bottle: Which Stays Colder Longer? 

Considering the Coldest is 6 bucks less, I'd say it's a demonstrably better value

"floats in oceans and pools". I guess it wont float in lakes then.. Damn

That actually was scientific, By doing the hot and cold tests and both being roughly 15 degrees different, nearly all of the variables have been removed. There's roughly a 20% difference in insulating ability. It's also the same size and slightly cheaper. Plus because they are the same cap size, you can use the accessories from the hydroflask. Clearly superior. Now I wonder if there is an even better one.

Problem is I'm going to drink my cold coffee in less then 10 minutes out of either as I have no self control.

Since the bottles look so similar, I wonder if the difference is in the lid design; a lot of insulated water bottles don't have insulated lids. Could you test them with the lids switched to test for that? That would be awesome.

Always looking for a good water bottle for the long days on motorcycle, great review

MY mom has a Stanley thermos .. that we purchased in 1972.....that when you fill with hot coffee in the morning it is still hot 12-15 hours later ....and think of the quality .. it has lasted that many years .. had to replace the screw top a few time but it has survived decades of use .

I'm curious if the lid is the difference there, it covers the neck and could be providing some level of insulation for the thinnest part of the whole bottle.

I'd be curious if the test results would be the same with the lids switched.

Just happened to come across this video and I’ve had the same coldest water bottle for 4 years now, plus have gotten more colors , and I love it. Literally don’t leave the house without it 🥰

Your videos are so well done and thorough. Keep up the good work!

I loved how you reviewed these!!!!!!! I definitely watched until the end and subscribed! Thanks!

For someone who reviews mostly boring stuff you actually succeed in making it interesting with nothing but your charming personality. Seriously man, you are one of the nicest and most pleasant people on this entire platform. Always a pleasure watching you :D

I bought a Coldest Water Bottle (and other lids for it) a few years back and just replaced my original (as I wanted something smaller/thinner) and it wasn't staying as cold as long anymore - which is common. The main reason i picked it was because it was cheaper than the hydroflask but still at a 'reasonable' price that I had faith in it. It's still one of my favorite ones and am looking to get an even smaller/newer one with the grey font, etc. I know those are cosmetic issues/personal things lol.. but A+ for the Coldest Water Bottle.

Soooo glad you did this review. I have the Coldest Water Bottle and love it. I've heard a lot about the Hydroflask but now that you've done the review I'm convinced I made the right choice. Again, thank you. 😊

James, I love your videos, this one hits close to home. I've got a damaged hypothalamus and temperature regulation is my biggest headache. I'm ALWAYS feeling overheated, so cold water/drinks are my best friends. I've come to rely on a brand called Tal. They are sold at Walmart and at a couple other stores like Target and Bed, Bath, and Beyond under the Manna name. I've had amazing luck with them and have the Ranger series from 18oz all the way up to the big mamma 64oz and they keep things cold for-EVER. 26oz Ranger with the screw spout lid kept a 50/50 ice/water blend at temperature for about 48 hours being left in the back seat of my SUV last summer. I left Thursday night with it around 11PM, opened it Saturday night after sundown (somewhere after about 9:15pm, according to the sunrise/set chart) and there was still an appreciable amount of ice left in it and it was COLD! I'd love to see a ProjectFarm type test with Tal/Manna, Coldest, Kleen Kanteen, and whatever else you want to throw together!

You’re awesome! I love how you rule out everything. While you were doing the thermostat test on the two bottles the first thing that came to mind was to alternate the thermostats and of course you did lol Keep up the amazing reviews!

I feel like it does better because the lid wraps around the metal on the top where as the hydro flask exposes that metal. That and the metal extends farther on one are the only differences I can see. It would be interesting to swap the caps and do the experiments again to see if its just the cap that makes the difference. Edit: I forgot about that coozie ring, but that shouldn't affect anything.

Love the page and content you put out. Keep up the great work

Thanks for the great review! I definitely need a bottle to keep my water ice cold in this Vegas heat all summer. Thanks James.

The Johnny Sins of reviews

My bet would be that if you swapped the caps, you may likely reverse the results. I have tried many vacuum bottles for both cold drinks and coffee, and the caps seem to play the most significant role in retention as they are not typically insulated. Thanks for the fun videos!!!

Part of the reason why the bottles have the same size lids is due to 3rd party ones such as for a spout lid or similar that you can swap them out for. My personal waterbottle is quite a bit larger than either of those, and it tends to be looking for the size for a bottle lid. I'd gotten a spout lid to replace the one needed to unscrew to drink from along with a strap/bag thing that I could fit it into as some added protection for my hiking gear.

Loved this review. Bought a hydroflask when they first came out and loved it. When it finally got too dented to work, I bought an EcoVessel water bottle and that thing kept managed to keep water and ice in it for 3 days at work. Bought some for my friends and they all agree its much better than a hydroflask.

Pretty good comparison! I've used Hydroflask for quite a long time and was always impressed with their performance. I will say that the ability to be slightly colder 24 hours later is nice, but probably not a big draw. I'd consider their cold performance difference within 10-12 hours, because that is about as long as you'd be doing some sort of activity (working, hiking, camping, travelling, etc).

Major Props James for wearing the UT anti-bulling shirt. Much Respect!

Great Review!! Always so detailed the best on youtube!

I love these comparisons, and this one sounds even better than some of the others.

Love Bailey looking for that lizard. So cute.

I have the hydro. And to this day I'm amazed on how long the water stays cool even with the cap off. I'm mean as if I took it just out of the fridge every time I took a sip.

I currently have an 18oz Olive Green Hydroflask with a sports cap. I got it over a week ago and i LOVE it!

Thank you James for maintaining us entertained during this! Best regards man

I think it's actually the cap on the coldest water bottle that keeps it cold. I've used bottles like these for years and most of the cold/heat escapes through the lid. I think the overlapping lid on the coldest water bottle saves it and keeps it that much colder for that much longer. If you switched the caps, would there be a difference?

James, I really wish you would have provided a control bottle. Like a cheap Walmart thermos. Also, you filled the bottles with ICE when you put them in the pool. Ice is less dense than water. If you could balance a glass bottle properly filled with ice (or empty), it too would float.

0:38 I wore the same shirt yesterday. Thank you for support a great cause too!

Stuck in self quarantine, your reviews keep me sane!! THANK YOU!!!

"Double dipper" - george costanza 😂

I've got both hydroflask and the coldest water bottle and the coldest water bottle has always stayed coldest out of the two. I've got 2 half gallon coldest water bottles and a 1 gallon on the way.

Thats dope you're a Tool fan! I was fortunate enough to see them play in January before the quarantine happened 🙏 Love the Channel man keep it up!

Love the shirt James! Great video per usual...

You need to get Bailey a fake lizard and put it there to surprise her 😂 Stay safe and God bless you & your family ❤ XOXO

Internal differences could be the amount of vacuum on the internals and quality of plating on the internals that provide radiation shielding.

Thank you for not editing the video showing you guessed right. You actually show honesty for the tests and when you are wrong.

cool video Q&A at the end was a great addition!

I love how bailey shows up at the second looking for her lizard

What would happen if you put them in the refrigerator empty overnight then add ice cubes and water....interesting

This man’s commitment to go to the desert and hike just to show us it’s good for going on a hike,I would never go out there just for a 6 second clip, not in this heat at least. Love you videos and your commitment for making great content

I have the 32 ounce hydroflask and love it, i’m not sure about the coldest water bottle but i love the different colours and customizations of the hydroflask, and the minimal logo

I'd love to see how they match up against traditional thermoseseses

Best Review's on RU-vid

You have the best reviews, there always interesting and fun

Good review! But worth mentioning Hydroflask does make a one-hand operating lid. Mine has one. Still going tough after several years!

i was watching some forensic files and saw a murderer named James White. FREAKIN REVIEWS!

Cant recommend Hydroflask if you're at all active. Broken 3 hydroflasks. One I bought two were gifts. You drop it, the rim gets bent just a little, and then the lid doesnt screw on correctly.

I've had a 1 gallon Coldest Water for over a year and it is AWESOME for keeping water cold. On Sunday evenings (around 7-8 pm) I put 4 trays of ice cubes in and a little more than 64 oz of cold water from my refrigerator. I work in a welding shop in northern Indiana (5:00 am-2:30 pm Mon-Thurs, 5:00 am-9:00 am on Friday) and depending on the time of year, I can sometimes get by with just adding more water on Tuesday, but usually add a tray of ice and top off with water. Wednesday through Thursday is pretty much the same routine. Where it gets interesting is this: I usually find cooler-than-tap water in the jug on Sundays after having sampled it occasionally during the weekend. There was one or two times that I have found very small pieces of ice when I got to fill it back up on Sunday evening. As far as drinking on the go, I got a lid for the jug that has a flip-up drinking spout that has a one-way valve that DOES NOT leak at all when it is in the up position even if the jug is upside down. I usually leave the spout up so I can just walk up to my jug sitting on my table in my work area and take a drink without even touching the jug; a real plus since even with gloves on, my hands still get pretty dirty. Another unique feature of the lid is that you can unscrew the part with the drinking spout to pour water into a cup...without removing the main lid. I also have a 64 oz jug with the same type of lid, as well as a 32 oz bottle with a no-spill lid. IMHOP, The Coldest Water is the best out there.

The difference in temperature is likely due to both the better cap on the coldest bottle that insulates the neck, and also likely a thicker layer of air to insulate. In the pool floating test we saw that the coldest bottle floated up quicker and since they’re both full of water and made of aluminum and plastic it’s likely the coldest bottle has a larger pocket of air between the metal layers leading to better insulation.

Had tix to Tool in Miami April 6 and well, we all know what happen, ticketmaster still has my money

Anyone going to point out the fact that both bottles made to keep cold are black ?!! The most inefficient colour for the job ! Awesome video tho :)

Honestly....dont know how I ended up here, BUT....I actually watched your entire vid, so def. subscribe & thumbs up!

Thank you mate I appreciate the time and the effort you took in this video

perfect timing dad, i just got my pizza infront of me and imma watch your new video

The bottles are probably made in the same factory with just different names

Awesome review. Nice glasses. Which glasses are those?

Thank for the video! I love, love my Hydroflask bottle. Maybe we can test the fliptop lid for leaks before buying/switching to the other bottle

Hydroflask: who are you? Coldest: I'm you, but better.

You should try them with the caps swapped.

Thanks! Now I know what bottle to buy, great video. 👍🏽

I have several Hydroflasks and love them, but had never heard of the Coldest Water Bottle until this video. I will have to look them up.

Poor Bailey. Get her a toy lizard and put it in that plant ....so she can CONQUER THE WORLD!

lol that lizard was gone weeks ago! I can't believe she's still looking for it

I have a Revomax water bottle that you can open with one hand and it is double lined insulated... It works great. Good video.

I have a Coldest water stainless steel cup that is three years old. I love it. It still keeps my water colder for longer than the plastic "insulated" cups. It also fits in my car cup holder and can be used one handed. However, it is not a sealed cup, so wouldn't be good for walking, hiking, etc. I would definitely recommend the brand, however.

Hydro flasks are over hyped

my hydroflask has a pop up spout no need to take cap off

Always the best reviews.

5:22 made me nostalgic for hiking vacations in Utah.

Who wants to carry around a bottle that says "COLDEST" on it? Haha

WHO would create a BLACK water bottle? It will absorb massive amounts of heat when the sun hits it trying to keep water cold and it will radiate the maximum amount of heat when trying to keep liquids hot! Black objects radiate the most heat in the shade and collect the most heat in the sun.

I love that you talked about Tool in this video.

I have a HydroFlask that I sometimes use to keep herbal tea hot outdoors in cold weather. Works well, but I agree the removable cap can be a pain.

this new comment thing youtube did is awful.

The packaging for the hydroflask already makes me not like them. They have the bottle on a riser to make it seem bigger. Thats scummy.

Great! But I would have to spray paint either one for finding easily if you drop it while kayaking or boating. Since I am more interested in keeping things cold, a bright color will probably only improve the performance.

I have been using one called ThermoFlask, 17oz not 21oz, purchased at Costco last year (2 Pack). It also is very similar to the two you tested but with the one added benefit, it has a push button top that flips open so you can drink while driving.

I actually like water room temp, easier to drink

DUDE ICE FLOATS! It is LESS DENSE than water. You have to fill them with WATER not ice.

Love this. I'm always looking for water bottles ❤

Awesome review!

They come from the same chinese factory

Just got my coldest bottle about a month ago, I live in Texas, I can concur they both are costly compared to just store branded ones ie colemans etc. I like my coldest bottle a lot. One thing I mistaken was 40oz bottle which doesn't fit in my cup holder in car but I keep it with me everywhere. And out on hot playground w my kiddo it's quite refreshing and cold after running around couple hours limited shade so its hot on the outside and still surprisingly cold inside. 💕

Another nice review job! :) I bet the difference is in the cap? Wonder if you switched them, if it woild change anything. Just curious. :) tyfs!

The lids are a standard size so you can use other lids, with spouts for instance, with many bottle brands. So more of a feature there, but yes they can use each other's caps. Back to the caps, I believe that's where a lot of the difference in cooling comes from. I bet if you put the coldest water bottle cap on the hydro-flask it would perform the same. Lid insulation is a huge part of keeping drinks hot or cold and its often over looked. Love your reviews man!

I have a 64oz yeti heavy-duty rambler bottle. Left ice cubes in it the morning for work. Forgot to take it took the same water the next day and it still had the ice cubes in it with the cubes 70% of there original form. Highly recommend.

My mom has a sweatshirt with that boy's Tennessee design! I love to see other people with it. It's such a sad but uplifting story!

I use Avex myself. Got the 40oz so I needed an adapter for my cup holder, they do have smaller size. Self sealing spout! Love it for driving. Ice last atleast a day. EDIT: Coleman bought them out so its now called Coldeman Autoseal

Awesome example of how a more established brand name almost triple the price isn’t always better. I go hiking a lot and I just bought my Coldest Water Bottle thanks to your video. Your channel is amazing.

My favorite youtube reviewer is a TOOL fan!? Just when i thought i couldn't love your channel any more! Give that sweetie Bailey a hug from me!

I have S’well Contigo and Manna bottles. They all work well and I love them.

This was a great review !

Was going through your archives. And don’t know how in the world I missed this video. Oh and I didn’t know you had a pool (not that it matters 😂)